Andrew,
If I understand you correctly it's about the on-page factors of your SEOMoz campaign?
I think they just check what page is indexed for that keyword by Google. Adjusting the page manually in the system is a temporary solution. After that they again go for the indexed page. Maybe it would be wiser to adjust your pages for the keywords in stead of altering the URL.
The page that ranks best for your keyword might just be the most logical page for that keyword. So in stead of adjusting URL's you might want to rethink that strategy and adjust the page.
Hope my insight may help you
regards
Jarno